MC9S12T64 Datasheet, PDF (277/608 Pages) Motorola, Inc – Specification

Freescale Semiconductor, Inc.
Clocks and Reset Generator (CRG)
External Pin Descriptions
NOTE: Crystal circuit is changed from standard!
EXTAL
MCU
XTAL
C_DC *
C₁
Crystal or
ceramic resonator
C₂
VSSPLL
* Due to the nature of a translated ground Colpitts oscillator a
DC voltage bias is applied to the crystal
. _{.Please contact the crystal manufacturer for crystal DC}
bias conditions and recommended capacitor value C_DC.
Figure 42 Colpitts Crystal Connections (XCLKS=1)
EXTAL
MCU
XTAL
R_B
R_S*
C₁
Crystal or
ceramic resonator
C₂
VSSPLL
* Rs can be zero (shorted) when use with higher frequency crystals.
Refer to manufacturer’s data.
Figure 43 Pierce Oscillator Connections (XCLKS=0)
Clocks and Reset Generator (CRG)
For More Information On This Product,
Go to: www.freescale.com
MC9S12T64Revision 1.1.1